Which pump gas piston for Powroll stroker?

[olimj]

Powroll's 460 stroker kit recommends 100 octane. Would like to stay with pump gas and minimize vibration with a light piston. Which 89mm piston should I go with?

[Martin Blair]

hmm you need to stay below 11:1. and its probably a 4mm stroker I dont know if even stock comp would do it. I would all poweroll or another engine builder.

[INFANTRY RACING]

i'm running a 13:1 in my powroll and some how slipping by on 100 octane

you can't run a stock piston on the heavy duty rod. id get whatever je offers below 11:1 cause the stroke will add a little compresion